The fourth generation of the wireless networks is called a 4G network. Although it is still in its development stage, various cell phone and related technology companies are actively researching on this technology. The main aim of the research is to ensure that a secure and comprehensive Internet Protocol solution is developed which would have much faster speeds as compared to the older generation networks.

During the 1980s, the 1G network or the first wireless network was developed. In the early 1990s, the 2G network was introduced. The 2G network had the ability to allow more transmissions per communication channel. In the late 1990s, the 3G network was researched upon and developed and during early 21st century it had been implemented in various countries.

Providing higher quality of service is the main aim of the 4G network. The other priorities include information exchanges, better reception and less dropped data. The standards of the present networks are calculated by the ITU or International Telecommunications Union and it had stated that the present networks need to have an improved multimedia message service which includes video services also. A minimum of 100 megabits per second of data rate is recommended by the ITU if a user is moving at very high speeds and one gigabit per second of data rate if a user is stationary. Interactive roaming between various networks is also recommended by the UTI.

There has been an establishment of various groups who work on developing the 4G network. One of the options recommended by these groups is WiMax which is a much faster version of WiFi networks. The packet-based information exchange which is based upon standard IP technology is planned to be utilized too. So, this could be the fastest mobile communication method.

What is a 4G networkHowever, there should be development and implementation of smart antennas in order to make an efficient 4G network. A number of methods to transmit data were created with the advent of 2G and 3G networks. The 4G network can utilize these technologies. But standardized antennas are preferred by the ITU and other working groups. Spatial multiplexing is one of the techniques that have been recommended to order to achieve this. In this type of multiplexing, a single receiver and transmitter system is linked to a series of antennas. The space-time exchange rate of data can be speeded up as these antennas have the capability to work simultaneously.

It took a decade for the overall implementation of 3G around the world. However, a much more timely and effective rolling out of the 4G network is planned by the ITU. It is expected that the 4G network will revolutionize the wireless communication systems due to its improved video and technology and much faster speeds. The other factors that are being considered regarding the development of 4G are security and stability.